Rails的主動管理複選框

Question

我有兩個型號，has_and_belongs_to_many關係

class ArticleRejectionReason < ActiveRecord::Base 

attr_accessible :reason 
has_and_belongs_to_many :articles 
end 

class Article < ActiveRecord::Base 
has_and_belongs_to_many :article_rejection_reasons 
end 


ActiveAdmin.register Article do 
    permit_params article_rejection_reason_ids: [] 

    f.inputs "Article Details" do 
    f.input :article_rejection_reasons, as: :check_boxes, collection: ArticleRejectionReason.all.collect { |r| [r.reason, r.id] } 
end 
end 

預期複選框（選項）生成。我可以將數據保存到數據庫中。

但是，當我點擊'編輯'按鈕時，我看不到所選的選項顯示。

我知道如何在jQuery中做到這一點。如何在活動管理員中顯示選定的選項？

更新1：

mysql> select * from article_rejection_reasons_articles; 
+------------+-----------------------------+ 
| article_id | article_rejection_reason_id | 
+------------+-----------------------------+ 
|  386 |       2 | 
|  386 |       4 | 
|  386 |       6 | 
+------------+-----------------------------+ 

更新2：

Answer 1

根據軌道命名約定， 'has_and_belongs_to_many' 應具有複數assosciations。

class ArticleRejectionReason < ActiveRecord::Base 
 

 
attr_accessible :reason 
 
has_and_belongs_to_many :articles /* plural */ 
 
end 
 

 
class Article < ActiveRecord::Base 
 
has_and_belongs_to_many :article_rejection_reasons /* plural */ 
 
end 
 

 

 
ActiveAdmin.register Article do 
 
    permit_params article_rejection_reason_ids: [] 
 
    form do |f| 
 
    f.inputs "Article Details" do 
 
    f.input :article_rejection_reasons, as: :check_boxes, collection: ArticleRejectionReason.all.collect { |r| [r.reason, r.id] } 
 
    end 
 
end 
 
end

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